hii have two program (in VB.net) on two seperate PC. in first program i bind a database that i can insert or delete the information in it. secend program have another database that this database as a subscriber get information from first database(by a push publication) .every thing is ok .but a problem : "when i change the content of the first program database (the content of tables) while the secend program is run , the changes not show on secend program until i exit from secend program and run it again. why this happened?